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# Lesson Menu - PowerPoint PPT Presentation

Lesson Menu. Main Idea Example 1: Use Unit Rates Example 2: Use Unit Rates Example 3: Use Unit Rates Example 4: Use Equivalent Fractions Example 5: Use Equivalent Fractions. Determine if two ratios are equivalent. Main Idea/Vocabulary.

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Main Idea

Example 1: Use Unit Rates

Example 2: Use Unit Rates

Example 3: Use Unit Rates

Example 4: Use Equivalent Fractions

Example 5: Use Equivalent Fractions

Answer: Since the rates have the same unit rate, , they are equivalent.

4 rolls

_______

\$1

÷12

÷5

48 rolls

20 rolls

4 rolls

4 rolls

__________

__________

_________

_________

=

=

\$12

\$5

\$1

\$1

÷12

÷5

Use Unit Rates

Determine if 20 rolls for \$5 and 48 rolls for \$12 are equivalent rates. Explain your reasoning.

Write each rate as a fraction. Then find its unit rate.

Example 1

A.Yes; they have the same unit rate, .

B.Yes; they have the same unit rate, .

C.Yes; they have the same unit rate, .

D.No; they do not have the same unit rate.

Determine if \$24 for 4 hours and \$30 for 6 hours are equivalent rates. Explain your reasoning.

Example 1 CYP

÷8

÷7

42 people

64 people

6 people

8 people

____________

____________

___________

___________

=

=

7 teams

8 teams

1 team

1 team

÷8

÷7

Use Unit Rates

Determine if 42 people on 7 teams and 64 people on 8 teams are equivalent rates. Explain your reasoning.

Write each rate as a fraction. Then find its unit rate.

Answer: Since the rates do not have the same unit rate, they are not equivalent.

Example 2

A.Yes; they have the same unit rate,

B.Yes; they have the same unit rate,

C.Yes; they have the same unit rate,

D.No; they do not have the same unit rate.

Determine if 90 miles in 2 hours and 135 miles in 3 hours are equivalent rates. Explain your reasoning.

Example 2 CYP

÷5

÷3

\$30

\$6

\$18

\$6

__________

_________

__________

_________

=

=

5 pizzas

1 pizza

3 pizzas

1 pizza

÷5

÷3

Use Unit Rates

FOODYou can buy 3 medium pizzas at The Pizza Place for \$18 or 5 medium pizzas for \$30. Are these selling rates equivalent? Explain your reasoning.

Write each rate as a fraction. Then find its unit rate.

Example 3

Answer: Since the unit rates are the same, , the rates are equivalent.

\$6

_______

1 pizza

Use Unit Rates

Example 3

A.Yes; since the unit rates are the same, the rates are equivalent.

B.Yes; since the unit rates are the same, the rates are equivalent.

C.Yes; since the unit rates are the same, the rates are equivalent.

D.No; since the unit rates are not the same, the rates are not equivalent.

CARWASHING On Saturday, the tennis team washed 42 cars in 3 hours to raise money for the team. On Sunday, they washed 60 cars in 5 hours. Are these work rates equivalent? Explain your reasoning.

Example 3 CYP

×2.2

?

5 laps

11 laps

=

____________

___________

8 minutes

16 minutes

×2

Use Equivalent Fractions

Determine if 5 laps swum in 8 minutes and 11 laps swum in 16 minutes are equivalent rates. Explain your reasoning.

Write each rate as a fraction.

The numerator and the denominator are not multiplied by the same number. So, the fractions are not equivalent.

Example 4

Use Equivalent Fractions

Answer: Since the fractions are not equivalent, the rates are not equivalent.

Example 4

A.No; since is not a unit rate, the ratios are not equivalent.

B.Yes; since the ratios are equivalent.

C.Yes; since the fractions are equivalent.

D.No; since the fractions are not equivalent, the ratios are not equivalent.

Determine if 4 free throws made out of 6 attempts and 8 free throws made out of 12 attempts are equivalent ratios.

Example 4 CYP

÷2

?

8 corrals

4 corrals

=

____________

___________

56 horses

28 horses

÷2

Use Equivalent Fractions

Determine if 8 corrals with 56 horses and 4 corrals with 28 horses are equivalent ratios. Explain your reasoning.

Write each ratio as a fraction.

Example 5

Use Equivalent Fractions

The numerator and the denominator are divided by the same number. So, the fractions are equivalent.

Answer: Since the fractions are equivalent, the ratios are equivalent.

Example 5

A.Yes; since the ratios are equivalent.

B.Yes; since the fractions are equivalent.

C.No; since is not a unit rate, the ratios are not equivalent.

D.No; since the ratios are not equivalent.

Determine if 15 boys out of 36 students and 5 boys out of 9 students are equivalent ratios.

Example 5 CYP